基于光纤传感器的电力电缆故障在线测距系统*

基于电力系统中对电力电缆故障在线测距的实际需求,结合光纤传感器的技术优势,研发了一套电力电缆故障在线测距系统。文中介绍了光纤传感器的光时域反射测距机理,详细介绍了激光发射电路的设计、光电检测电路的设计及GPRS通信电路设计和系统软件结构的设计。该系统克服了传统离线测距方法存在的断电测量和修复时间长的缺点。现场测试结果表明,系统测距精度较高且可靠强。

The Location System of On-line Power Cable Fault Based On Fibre Optical Sensor

Based on the actual need of online fault location of power cable in power system, combining with the technical advantages of optical fiber sensor, this paper proposes a set of power cable online fault location system with the characteristics of optical time domain reflection location mechanism of the optical fiber sensor, and it presents the use of power cable fault in the on-line location system.The design of laser emission circuit, photoelectric detection circuit design, GPRS communication circuit design, and the design of the system software structure are also described in detail.The system overcomes disadvantages that power outage measurement and repair time is too long in traditional location methods.The field test results show that the system has high accuracy and high reliability.